When I search for invert selection for Sublime Text 2 in Google I find Sublime Text 2's list of commands, one of which is invertSelection. When I create a keyboard shortcut for that command, it does not work. I've also tried invert_selection. What am I missing here?

Basically I want to be able to select a portion of the code, and hit a key, and then Sublime Text will deselect my current selection, and select everything that was not in my selection previously. Just like the command states...

I, too, wanted to find an "invert_selection" (and "clear_selection") command and kept coming back to the ST1 command list. How can we be expected to create custom key bindings if there's no list of available commands for ST2? Could someone point me at such a list?